Method of and apparatus for drawing glass.



PATEXTED JUNE '2,- 190's.

P.'L. 0. WADSWORTH. METHOD 0? AND APPARATUS FOR DRAWINGIGLASS.

APPLICATION FILED J'ULY'Q, 1906.

-2 SHEEN-SHEET 1.

1 yigzw QQQQQ QQQQ @QQQQ U6 gQQmQQ @Q g Q 47 z 7 A) A /2 7 4W 1?? 4 Z4 7 A v .,.x

a Wm

PATENTfiD JUNE z, 1908.

F. L. O. 'WADSWORTH. METHOD OF AND APPARATUS FOR D RA'WING GLASS.

APPLICATION FI LED JULYQ, 1906.

2" SHEETS-SHEET 2.

NVENTOR (3 M zwezwz which extent ent systems.

. extend partly over the piers,

rnvrrn sra rnrarnnr FRANK L. O. WADSWORTH, OF PITTSBU RG; PENNSYLVANIA, ASSIGNORITO WINDOW GLASS MAOHINECOMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF N EW J ERSEY METHOD OF AND APEARATIL; FOR DRAWING GLASS.

Specification of Letters Patent.

Patented June 2, 1908.

Application filedJ'uly 9, H206. fierial No. 325,265.

To all whom it may concern:

Be it known that I, FRANK L. 0. fans- WORTH, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and use; ful Method of and A paratus forDrawing Glass, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of track may this specification, in Which Figure his a diagrammatic plan view of apparatus constructed in accordance with my invention; andFi 2 is a cross-section on an enlarged scale 0 the furnace partly in front elevation.

y glass articles, and is desi ned to do away with the feeding of glass om a tank into drawing pots or receptacles. it is also de signed to obviate the removal of the remaining glass from drawing pots. The handling of culletfroin the potsis done away with, as well as all operations connected .with the feeding and transferri g of glass in the pres- My invention consists in providing a series of ots into each of which the glass batch is fer these pots being laced in a furnace in which the catch is me ted and brought into proper condition for drawing. The pots are moved successively out of the furnace, the

articles are. drawn ther from, the ots are then returned to the entfiance end 0 the furnace, afresh batch is fed thereinto, and the operation thus goes on continuously, without the necessity for cleaning the ots, for removing cullet, or for any transiier of glass from one receptacle to another.

in the drawing, 2? represents a furnace whiclimay be similar to the ordinary tank furnace exec t that tracks 5 are provided l through it. The furnace is in the form of' a tunnel having movable end doors 3 and 4 through which thecarriers and ots move. The floor cf'the furnace in the orm shown is provided with four'tracks 5, upon whicl'z travel the trucks 6. These trucks are provided with bodies 7 of retrac tor material on which are setthe pots 8-. In or er to protect the wheels and tracks, 1 preferably provide refractory piers .9 extending between the tracks, the refracinry car bodies having laterel'cxtensions it) which thus protecting the metal parts; The cars may butt against each other end to end, or may he provided that the invention relates to the drawing of" with suitable connections. They Ina also be pushed through the furnace by by raulic mechanism, at the rear end, or by any other.

suitable apparatus. From one end of the furnace, tracks 11 lead to the drawing stations 12. These tracks may be arranged so pots from an one track pass to certam stations, or so t tions. From the four drawing stations the trucks return over tracks 13 to tracks'13, which extend through tunnels 14 back to the rear end of the furnace." Fronr this oin't the return cars or trucks may be moved acir' onto the rear extensions of the furnace tracks, where they are fed with the batch rnaterial and again ushed into the furnace.

In the use of t e zipparatus, the furnace is preferably kept filledrwith the series of pots.

As one pot is pushed or moved out from one track to a drawing station, another pot with afresh batch of material will be fed IILBJZ the rear end on the same track. The length of the furnace is preferably such the proper time for drawing, the glass batch will be properl melted, and fined, in the time of travel 0 the pot through the furnace. As the glass remaining in the pot is not re moved, there need be no heating of the ot at the drawing station. The truck with t e-pot thereon is simply moved out of the furnace to the drawing station, the glass drawn therefrom in any desirable manner, and the truck and pohthen moved back throughthe returntunnel tot-he entrance end. The return tunnels are preferably employed in order to keep the refractory truck body van the potatat high temperature, thus saving in fuel. I also preferably apply heat to the return tunnels. is in such a mannerthat there is a gradually increasing tem erature from the drawing station end to t is op osite end. 'Pl'iecars in returning throught ese tunnels will there lat the pots from any pass to any one of thedrawing sta-" that aliowing fore he gradually heated up and will be at a high temperature when the batch is fed in ion,

and the ot movedinto the furnace. prop'en The a vantages oi" m invention will be apparent to those skille in the In the or i nary drawing system, where ladling is employed, the glass must-be ladled from the furnace and the ladle then moved over to the 3 drawing station and the glass partiellyemp tied into a pot, which is'usuali reversih e and is mounted in a furnace. Theladle is then moved to a culiet tank, into which the from the lower cavity of the reversible pot,

cavity, is taking-place. glass must befreturn'edto the furnace, as we as remainder of the glass is'emptied. The remaining glass after each draw is melted out while the drawing of the glass from the upper This .cullet 1 the cullelt froinQthe ladles. ;My invention does aw with allof these operations, as well as "allf' 2-. let glass f m the'p'o'ts. 'After the drawing operation in my *system, the remaining glass isleft' ther-pot, and the batch is fed in upon it- There is no transfer ofglass from one receptacle'to another, .and the entire operation is simple and easily carried out. Other mechanism'may be used for carrying the ots 'throughth-efurnace, as well as moving t em to the drawing stations and back to the entrance end of the furnace. The pots may be moved back through the furnace itself, through exterior tunnels, or through the open a1r.

' Many other changes may be made in the form and arrangement of the apparatus without departing from my invention.

"1.- A furnace having a series of glass-holding pots or receptacles, means for moving said ots successively through the furnace cham er, and a drawing station to which the pots are moved; substantially as described.

-. for moving the pots successively through the 2. A furnace havinga series of glass-holding pots arranged to move through said furnace successively, a drawing station to which the pots are movable, and means for returning the ots to the entrance end of the furnace; su st'antially as described.

3. A furnaoehaving a series of pots, means a furnace, and a series of drawing stations to described.

I as

which the pots are movable; substantially as 4. A furnace having a track extending therethrough, a series of trucks or carriages having pots mounted, thereon and movable through the furnace,1ahd a drawing station at one point in the track; substantially: as described. i

5.'A glass melting furnace comprising a heating chamber, a series of pots and means Y 6'. A glass melting and fining furnace havling-a series of pots movable through the to move the pots through the furnace in succession, and a drawing station in the path of the pots,

melting and finin furnace, and a drawing station to which the pots are movable; substantially .as described. )7 .A fu

ving pots thereon movable along said tracks, a drawing station at one point'm the track, and return track on which the trucksgnay be returned to the rnace having a track extending therethrough, trucks 1a entrance or melting end of the furnace; sub stantially as described.

8. A furnace having 'a series of pots, a .batch-receiving station, and melting furnace, and means for moving the pots from the batch-receiving station through the melting furnace;substantially as described.

9. A furnace having a series of pots, a

drawing station, and means for moving the pots from the batch station through the furing station; substantially as described.

10. A furnace having a track, a series of trucks having glass-holding pots thereon, and a batch station, a melting furnace, and a drawing station at different points in the. length of the track; substantially as descri ed.

11. The method of making glass, consisting in feeding the batch into .a series of pots, and moving said pots successively throu h a meltin furnace; substantially as descrihed.

12. he method of making glass, consisting in feeding the batch into a'series of pots, and moving said pots through a melting and fining furnace; substantially as described;

13. The method of making glass articles, consisting in feeding the batch into a-series of pots, moving said pots successively through a melting furnace, and drawin glass from the successive pots; substantially as described.

14. The method of making glass articles, consisting in feeding the batch into a series of pots, .moving the said pots successively through a melting furnace, drawing glass from the successive pots, and returnin said pots to the batch station; substantially as described.

15. The method of drawing glass articles, consisting in drawing glass from a bath in a pot, leavin a portion of mg ina fresh batch, remelting the glass therein, and a ain drawin glass from the pot; substantia ly as descri ed.

16. The method of making glass articles, consisting in melting a batch in a pot, drawing glass directly from the pot, refill'ng the pot with .a batch, and remeltinggjs bstantially as described.

17. The method of forming glass articles, consisting in feeding a batch into alseries of through a melting and fining furna e, and then to a drawing station, drawing g1 ss successively directly from said pots, and then returning said pots successivelyto the entrance ormelting end of the furnace; sub stantiall as described.

18. T e method of forming glass articles, consisting in feeding a batch into a seriesof pots, moving the said pots successively through a melting and fining furnace, and

then to a drawing station, drawing glass sucbatch-receiving station, a melting furnace, a

Ilace, said pots'being movable to the drawglass in the pot, fillpots, moving the said potsv successively cessively directly from said pots, then returning said pots successively-to the entrance or melting end of the furnace, and lgheating the pots. as they are moved back to the batch station; substantially as described.

19. The combination of a glass heating furnace, a continuous track passing through the furnace, and a series of pots movable through the furnace on said tracks.

20. The combination of a furnace provided with a track therethrough, a series of trucks provided with means to protect the wheels from the heat of the furnace and each carrying a pot, a drawing station and means 21. The combination with a heating fur-' nace and a circuit of track running therethrough, of a series of trucks carrying pots movable on said. track, and a drawing station located on the circuit of the track, substantially as described. 4

In testimony whereof, I have hereunto set my hand.

FRANK L, O. WADSWORTH. Witnesses:

JOHN MILLER, H. M. CORWIN. 

